====== LDAP Matriz 02 ======
**Cenário:**
  * **LDAP Matriz 01** - 203.0.113.90 **FQDN** - ldapmatriz01.example.com
  * **LDAP Matriz 02** - 203.0.113.91 **FQDN** - ldapmatriz02.example.com

Pacotes necessários:
<code bash>
[root@ldapmatriz02 ~]# yum install openldap-clients openldap-servers nss-pam-ldapd
</code>

Cópia dos arquivos originais:
<code bash>
[root@ldapmatriz02 ~]# cp -vap /etc/openldap/slapd.d{,.dist}
</code>

Copiando o backend de exemplo criado na instalação para /usr/lib/ldap:
<code bash>
[root@ldapmatriz02 ~]# install -m 644 -o ldap -g ldap /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
</code>

Iniciando e ativando o slapd:
<code bash>
[root@ldapmatriz02 ~]# systemctl start slapd.service
[root@ldapmatriz02 ~]# systemctl enable slapd.service
</code>

Adicionar uma senha de root e modificar o olcAccess a fim de exigir uma senha de autenticação
<code bash>
[root@ldapmatriz02 ~]# slappasswd
New password: 
Re-enter new password: 
{SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
</code>

<code bash>
[root@ldapmatriz02 ~]# mkdir ldifs
[root@ldapmatriz02 ~]# cd ldifs/
</code>

<code bash>
[root@ldapmatriz02 ldifs]# cat manager.ldif 
dn: olcDatabase={0}config,cn=config
changetype: modify
add: olcRootPW
olcRootPW: {SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
-
replace: olcAccess
olcAccess: {0}to *
       by dn.base="cn=Manager,dc=example,dc=com" manage
       by * none
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapmodify -Q -Y EXTERNAL -H ldapi:/// -f manager.ldif 
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={0}config,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={0}config,cn=config
objectClass: olcDatabaseConfig
olcDatabase: {0}config
olcRootPW: {SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
olcAccess: {0}to *      by dn.base="cn=Manager,dc=example,dc=com" manage      
 by * none
</code>

olcDatabase={1}monitor: Modificando a ACL.
<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={1}monitor,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={1}monitor,cn=config
objectClass: olcDatabaseConfig
olcDatabase: {1}monitor
olcAccess: {0}to * by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external
 ,cn=auth" read by dn.base="cn=Manager,dc=my-domain,dc=com" read by * none
</code>

<code bash>
[root@ldapmatriz02 ldifs]# cat monitor.ldif
dn: olcDatabase={1}monitor,cn=config
changetype: modify
replace: olcAccess
olcAccess: {0}to *
       by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" read
       by dn.base="cn=Manager,dc=example,dc=com" read
       by * none
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapmodify -H ldapi:/// -x -D "cn=config" -W -f monitor.ldif 
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={1}monitor,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={1}monitor,cn=config
objectClass: olcDatabaseConfig
olcDatabase: {1}monitor
olcAccess: {0}to *      by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=ext
 ernal,cn=auth" read      by dn.base="cn=Manager,dc=example,dc=com" read      
 by * none
</code>

olcDatabase={2}hdb: Alterar o sufixo e adicionando uma senha de root.
<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={2}hdb,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={2}hdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcHdbConfig
olcDatabase: {2}hdb
olcDbDirectory: /var/lib/ldap
olcSuffix: dc=my-domain,dc=com
olcRootDN: cn=Manager,dc=my-domain,dc=com
olcDbIndex: objectClass eq,pres
olcDbIndex: ou,cn,mail,surname,givenname eq,pres,sub
</code>

<code bash>
[root@ldapmatriz02 ldifs]# cat hdb.ldif
dn: olcDatabase={2}hdb,cn=config
changetype: modify
replace: olcSuffix
olcSuffix: dc=example,dc=com
-
replace: olcRootDN
olcRootDN: cn=Manager,dc=example,dc=com
-
add: olcRootPW
olcRootPW: {SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapmodify -H ldapi:/// -x -D "cn=config" -W -f hdb.ldif 
Enter LDAP Password: 
modifying entry "olcDatabase={2}hdb,cn=config"
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={2}hdb,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={2}hdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcHdbConfig
olcDatabase: {2}hdb
olcDbDirectory: /var/lib/ldap
olcDbIndex: objectClass eq,pres
olcDbIndex: ou,cn,mail,surname,givenname eq,pres,sub
olcSuffix: dc=example,dc=com
olcRootDN: cn=Manager,dc=example,dc=com
olcRootPW: {SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
</code>

Configurar a indexação no olcDatabase={2}hdb:

**OBS**: Antes precisamos adicionar novas schemas. 
<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b cn=schema,cn=config -LLL dn
Enter LDAP Password: 
dn: cn=schema,cn=config

dn: cn={0}core,cn=schema,cn=config
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapadd -H ldapi:/// -x -D "cn=config" -W -f /etc/openldap/schema/cosine.ldif
[root@ldapmatriz02 ldifs]# ldapadd -H ldapi:/// -x -D "cn=config" -W -f /etc/openldap/schema/inetorgperson.ldif
[root@ldapmatriz02 ldifs]# ldapadd -H ldapi:/// -x -D "cn=config" -W -f /etc/openldap/schema/nis.ldif
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b cn=schema,cn=config -LLL dnEnter LDAP Password: 
dn: cn=schema,cn=config

dn: cn={0}core,cn=schema,cn=config

dn: cn={1}cosine,cn=schema,cn=config

dn: cn={2}inetorgperson,cn=schema,cn=config

dn: cn={3}nis,cn=schema,cn=config
</code>

<code bash>
[root@ldapmatriz02 ldifs]# cat indices.ldif
dn: olcDatabase={2}hdb,cn=config
changetype: modify
replace: olcDbIndex
olcDbIndex: objectClass eq,pres
olcDbIndex: ou,cn,mail,surname,givenname eq,pres,sub
olcDbIndex: uid,memberUid,gidNumber eq
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapmodify -H ldapi:/// -x -D "cn=config" -W -f indices.ldif 
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={2}hdb,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={2}hdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcHdbConfig
olcDatabase: {2}hdb
olcDbDirectory: /var/lib/ldap
olcSuffix: dc=example,dc=com
olcRootDN: cn=Manager,dc=example,dc=com
olcRootPW: {SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
olcDbIndex: objectClass eq,pres
olcDbIndex: ou,cn,mail,surname,givenname eq,pres,sub
olcDbIndex: uid,memberUid,gidNumber eq
</code>

Modificar a configuração para que os usuários podem alterar suas próprias senhas, mas não é possível visualizar outros:
<code bash>
[root@ldapmatriz02 ldifs]# cat hdb_passwd.ldif 
dn: olcDatabase={2}hdb,cn=config
changetype: modify
replace: olcAccess
olcAccess: {0}to attrs=userPassword,shadowLastChange
       by dn.exact="cn=Manager,dc=example,dc=com" write
       by self =xw
       by anonymous auth
       by * none
olcAccess: {1}to *
       by dn.exact="cn=Manager,dc=example,dc=com" write
       by self read
       by users read
       by * none
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapmodify -H ldapi:/// -x -D "cn=config" -W -f hdb_passwd.ldif 
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -W -x -D cn=config -b olcDatabase={2}hdb,cn=config -LLL
Enter LDAP Password: 
dn: olcDatabase={2}hdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcHdbConfig
olcDatabase: {2}hdb
olcDbDirectory: /var/lib/ldap
olcSuffix: dc=example,dc=com
olcRootDN: cn=Manager,dc=example,dc=com
olcRootPW: {SSHA}TeBX8HlxLzjEIBaeoxvMmMt7ExutUcAP
olcDbIndex: objectClass eq,pres
olcDbIndex: ou,cn,mail,surname,givenname eq,pres,sub
olcDbIndex: uid,memberUid,gidNumber eq
olcAccess: {0}to attrs=userPassword,shadowLastChange      by dn.exact="cn=Mana
 ger,dc=example,dc=com" write      by self =xw      by anonymous auth      by 
 * none
olcAccess: {1}to *      by dn.exact="cn=Manager,dc=example,dc=com" write      
 by self read      by users read      by * none
</code>

Criando uma estrutura básica:
<code bash>
[root@ldapmatriz02 ldifs]# cat base.ldif
dn: dc=example,dc=com
dc: example
objectClass: top
objectClass: domain

dn: ou=Usuarios,dc=example,dc=com
ou: Usuarios
objectClass: top
objectClass: organizationalUnit

dn: ou=Grupos,dc=example,dc=com
ou: Grupos
objectClass: top
objectClass: organizationalUnit
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapadd -H ldap://ldapmatriz01.example.com -x -W -D cn=Manager,dc=example,dc=com -f base.ldif
</code>

<code bash>
[root@ldapmatriz02 ldifs]# ldapsearch -H ldap://ldapmatriz01.example.com -x -D cn=Manager,dc=example,dc=com -W  -b dc=example,dc=com -LLL
Enter LDAP Password: 
dn: dc=example,dc=com
dc: example
objectClass: top
objectClass: domain

dn: ou=Usuarios,dc=example,dc=com
ou: Usuarios
objectClass: top
objectClass: organizationalUnit

dn: ou=Grupos,dc=example,dc=com
ou: Grupos
objectClass: top
objectClass: organizationalUnit
</code>